Peach tree named ‘Summer Perfection’

ABSTRACT

A new and distinct variety of peach tree ( Prunus persica ). The following features of the tree and its fruit are characterized with the tree budded on ‘Nemaguard’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consist of the following combination of desirable features:
     1. Tree having a vigorous, upright growth habit.   2. Tree being a regular and productive bearer of large size fruit.   3. Clingstone fruit with firm, yellow flesh.   4. Fruit having an attractive red skin color.   5. Fruit with very good flavor and eating quality.

Botanical designation: Prunus persica.

Variety denomination: ‘Summer Perfection’.

BACKGROUND OF THE VARIETY Field of the Invention

In the field of plant genetics, we conduct an extensive and continuing plant-breeding program including the organization and asexual reproduction of orchard trees, and of which plums, peaches, nectarines, apricots, cherries, almonds and interspecifics are exemplary. It was against this background of our activities that the present variety of peach tree was originated and asexually reproduced by us in our experimental orchard located near Modesto, Stanislaus County, Calif.

PRIOR VARIETIES

Among the existing varieties of peach trees, which are known to us, and mentioned herein, ‘Sweet Henry’ Peach (U.S. Plant Pat. No. 16,068), ‘Summer Amelia’ Peach (U.S. Plant Pat. No. 24,777) and our proprietary non-patented nectarine seedling selection ‘170LT100’.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT

Not applicable.

ORIGIN OF THE VARIETY

The new and distinct variety of peach tree (Prunus persica) was developed by us in our experimental orchard located near Modesto, Calif. from a first generation cross between our proprietary non-patented peach seedling ‘36LW277’ and ‘Sweet Henry’ Peach (U.S. Plant Pat. No. 16,068). The seed parent (36LW277) originated as an open pollinated seedling selection from our proprietary non-patented nectarine seedling selection ‘170LT100’. A large number of these first generation seedlings were planted and grown on their own root system, during which time we recognized the desirable tree and fruit characteristics of the present seedling and selected it in 2013 for additional asexual propagation and commercialization.

ASEXUAL REPRODUCTION OF THE VARIETY

In 2013 asexual reproduction of the new and distinct variety of peach tree was by budding to ‘Nemaguard’ Rootstock (non-patented), as performed by us in our experimental orchard located near Modesto, Calif., and shows that reproductions run true to the original tree and all characteristics of the tree and its fruit are established and transmitted through succeeding asexual propagations.

SUMMARY OF THE NEW VARIETY

The present new and distinct variety of peach tree (Prunus persica) is of large size, vigorous, upright growth and a regular and productive bearer of large size, yellow flesh, clingstone fruit with good flavor and eating quality. The fruit is further characterized by having firm flesh and attractive red skin color. In comparison to its proprietary non-patented peach seed parent ‘36LW277’ the fruit of the new variety is larger in size and is approximately 8 days earlier in maturity. In comparison to its pollen parent ‘Sweet Henry’ Peach (U.S. Plant Pat. No. 16,068) the fruit of the new variety is larger in size and has a balanced sugar and acid flavor compared to a sweet sub-acid flavor. In comparison to the commercial variety ‘Summer Amelia’ Peach (U.S. Plant Pat. No. 24,777) the fruit of the new variety is larger in size and is approximately 5 days earlier in maturity.

DESCRIPTION OF THE PHOTOGRAPH

The accompanying color photographic illustration shows typical specimens of the foliage and fruit of the present new peach variety. The illustration shows the upper and lower surface of the leaves, an exterior and sectional view of a single fruit divided in its suture plane to show flesh color, pit cavity and the stone remaining in place. The photographic illustration was taken shortly after being picked (shipping ripe) from a 5 year old tree and the colors are as nearly true as is reasonably possible in a color representation of this type.

DESCRIPTION OF THE VARIETY

The following is a detailed botanical description of the new variety of peach tree, its flowers, foliage and fruit, as based on observations of 5 year old specimens grown near Modesto, Calif., with color in accordance with Munsell Book of Color published in 1958.

-   Tree:     -   -   Size.—Large, usually pruned to 3 to 3.5 meters in height and             width for economical harvesting of fruit. Size varies with             different cultural practices.         -   Vigor.—Vigorous, growth of 1.5 to 2 meters in height the             first growing season. Varies slightly with type and             fertility of soil, climatic conditions and cultural             practices.         -   Form.—Upright, usually pruned to vase shape.         -   Branching habit.—Upright, crotch angle approximately 25°,             increases with heavy crop load.         -   Productivity.—Productive, thinning and spacing of fruit             necessary for desired market size fruit. Number of fruit set             varies with climatic conditions during blooming period.         -   Bearer.—Regular, has had adequate fruit set 4 consecutive             years. No alternate bearing observed.         -   Fertility.—Self fertile.         -   Density.—Medium dense, usually pruned to vase shape to             increase air movement and sunlight to enhance fruit color             and health of fruit wood.         -   Hardiness.—Hardy in all stone fruit growing areas of             California. Tree grown in USDA Hardiness Zone 9. Winter             chilling requirement approximately 750 hours at or below 45°             F. -   Trunk:     -   -   Size.—Medium, average circumference 55.9 cm at 22.9 cm above             ground on a 5 year old tree.         -   Stocky.—Medium stocky.         -   Texture.—Medium shaggy, roughness increases with age.         -   Color.—Varies from 5YR 4/2 to 5YR 3/2. -   Branches:     -   -   Size.—Medium. Average circumference 12.4 cm at 1.2 meters             above ground. Crotch angle approXimately 25°, increases with             heavy crop load.         -   Surface texture.—New growth relatively smooth. Mature growth             medium rough, roughness increases with age.         -   Lenticels.—Average number 26 in a 25.8 square cm area.             Average length 3.9 mm. Average width 1.7 mm. Color varies             from 5YR 5/6 to 5YR 5/10.         -   Color.—New growth varies from 5GY 6/6 to 5GY 7/6. Old growth             varies from 5YR 4/2 to 5YR 4/6. -   Leaves:     -   -   Size.—Large. Average length 148.5 mm. Average width 37.1 mm.         -   Form.—Lanceolate.         -   Apex.—Acuminate.         -   Base.—Cuneate.         -   Margin.—Serrate.         -   Thickness.—Medium.         -   Surface texture.—Upper surface relatively smooth, slight             indentations over midrib and leaf veins. Lower surface             relatively smooth, except for small ridges created by midrib             and pinnate venation. Both upper and lower surfaces             glabrous.         -   Petiole.—Average length 11.5 mm. Average width 1.4 mm.             Longitudinally grooved. Surface — glabrous. Color varies             from 5GY 6/6 to 5GY 7/6.         -   Glands.—Type — reniform. Size — medium. Average length             1.4 mm. Average diameter 1.0 mm. Number varies from 2 to 3,             average 2. Located primarily on upper portion of petiole and             base of leaf blade. Color varies from 5GY 6/6 to 5GY 7/6.         -   Stipules.—Average number 2. Average length 6.7 mm. Edges —             serrate. Color varies from 5GY 6/6 to 5GY 7/6.         -   Color.—Upper surface varies from 2.5GY 4/4 to 2.5GY 4/6.             Lower surface varies from 10Y 5/4 to 2.5GY 5/4. Midvein             color varies from 5Y 8/4 to 7.5Y 8/4. -   Flower buds:     -   -   Size.—Large. Average length 18.7 mm. Average diameter 12.3             mm.         -   Hardiness.—Hardy with respect to California winters.         -   Density.—Medium dense.         -   Form.—Conical, becoming elongated just before opening.         -   Pedicel.—Average length 2.9 mm. Average width 1.4 mm.             Surface — glabrous. Color varies from 2.5GY 6/6 to 5GY 6/8.         -   Color.—Varies from 7.5RP 6/12 to 7.5RP 8/4. -   Flowers:     -   -   Blooming period.—Date of First Bloom Feb. 20, 2018. Date of             Petal Fall Mar. 2, 2018, varies slightly with climatic             conditions.         -   Size.—Large. Average height 21.4 mm. Average diameter 46.2             mm.         -   Petals.—Normally 5, alternately arranged to sepals. Size —             large. Average length 20.8 mm. Average width 18.1 mm. Form —             obovate. Petal apex — rounded to ovate. Petal base —             truncate. Margin — sinuate. Arrangement — free to slightly             overlapping. Both upper and lower surfaces glabrous. Color             varies from 7.5RP 8/4 to 5R 8/4, fades with age of flower.         -   Sepals.—Normally 5, alternately arranged to petals. Size —             large. Average length 6.4 mm. Average width 5.9 mm. Shape —             ovate, apex rounded. Margin — entire. Surface — upper             surface glabrous, lower surface pubescent. Color — upper             surface varies from 5GY 5/6 to 7.5R 3/8. Lower surface             varies from 7.5R 3/2 to 7.5R 2/2.         -   Stamens.—Average number per flower 47. Average filament             length 17.2 mm. On average, the stamens are above the height             of the petals. Filament color varies from N 9.5/(white) to             5RP 7/6, depending on age of flower. Anther color varies             from 7.5R 3/12 to 5Y 8/8.         -   Pollen.—Self fertile. Color varies from 2.5Y 7/10 to 5Y             7/12.         -   Pistil.—Number — normally one. Average length 17.8 mm.             Position of the stigma an average of 3.0 mm below anthers.             Surface — pubescent. Color varies from 7.5Y 8/4 to 10Y             8.5/4.         -   Fragrance.—Slight aroma.         -   Color.—Varies from 5RP 8/4 to 7.5RP 8/4.         -   Pedicel.—Average length 4.0 mm. Average width 1.7 mm. Color             varies from 2.5GY 5/8 to 5GY 5/6.         -   Number flowers per flower bud.—Normally one. -   Fruit:     -   -   Maturity when described.—Firm ripe and ready for             consumption.         -   Date of first picking.—Aug. 8, 2018.         -   Date of last picking.—Aug. 18, 2018, varies slightly with             climatic conditions.         -   Size.—Large. Average diameter axially 80.4 mm. Average             transversely in suture plane 83.6 mm. Average weight 319.3             grams, varies slightly with fertility of the soil, amount of             thinning and climatic conditions.         -   Form.—Globose.         -   Suture.—Lipped.         -   Ventral surface.—Lipped.         -   Apex.—Slightly retuse.         -   Base.—Retuse.         -   Stem cavity.—Rounded to slightly elongated in suture plane.             Average depth 11.7 mm. Average diameter 8.2 mm. -   Stem:     -   -   Size.—Small to medium. Average length 9.4 mm. Average             diameter 4.0 mm.         -   Color.—Varies from 10Y 7/8 to 2.5GY 6/6. -   Flesh:     -   -   Ripens.—Evenly.         -   Texture.—Firm, meaty, crisp.         -   Fibers.—Few, small, tender.         -   Firmness.—Firm, comparable to other commercial peach             varieties.         -   Aroma.—Moderate.         -   Amydgalin.—Undetected.         -   Eating quality.—Very good.         -   Flavor.—Very good, with a good balance between acid and             sugar.         -   Juice.—Moderate amount, enhances flavor.         -   Acidity.—Not available.         -   Brix.—Average Brix 10.9°, varies slightly with amount of             fruit per tree and climatic conditions.         -   Color.—Varies from 2.5Y 8/8 to 7.5R 2/8 near the pit cavity.         -   Pit cavity.—Average length 41.3 mm. Average width 30.2 mm.             Average depth 12.4 mm. Color varies from 5R 3/8 to 7.5R 2/8. -   Skin:     -   -   Thickness.—Medium.         -   Surface.—Smooth.         -   Pubescence.—Moderate amount, short in length.         -   Tendency to crack.—None.         -   Color.—Ground color varies from 2.5Y 8/10 to 5Y 8/10.             Overspread with 5R 4/6 to 5R 4/10.         -   Tenacity.—Tenacious to the flesh.         -   Astringency.—Slight to none. -   Stone:     -   -   Type.—Clingstone, strong adherence to flesh.         -   Size.—Large. Average length 40.3 mm. Average width 29.2 mm.             Average thickness 22.8 mm.         -   Form.—Obovoid.         -   Base.—Flat.         -   Apex.—Pointed. Average length 1.8 mm.         -   Surface.—Pitted throughout, pits vary from round to             elongated.         -   Sides.—Unequal, one side extending further from suture             plane.         -   Ridges.—Relatively smooth, narrow ridges extending from base             toward apex.         -   Tendency to split.—None.         -   Color.—Varies from 7.5R 2/8 to 10R 2/6 when dry. -   Kernel:     -   -   Size.—Large. Average length 23.3 mm. Average width 14.4 mm.             Average depth 6.6 mm.         -   Form.—Ovate.         -   Viability.—Viable, complete embryo development.         -   Skin color.—Varies from 5Y 8.5/6 to 5Y 8/8. -   Use:     -   -   Dessert.—Market — local and long distance. -   Keeping quality: Good, held firm in cold storage 3 weeks at 38° to     42° F. without shriveling, internal breakdown of flesh or     appreciable loss of flavor. -   Shipping quality: Good, showed minimal skin scarring or flesh     bruising during picking, packing and shipping trials. -   Plant/fruit disease resistance/susceptibility: No specific testing     for relative plant/fruit disease resistance/susceptibility has been     designed. Under close observation during planting, growing, and     harvesting of fruit, under normal cultural and growing conditions     near Modesto, Calif., no particular plant/fruit disease resistance     or susceptibility has been observed. Any variety or selection     observed during indexing of plant characteristics with abnormal     fungus, bacterial, virus or insect susceptibility is destroyed and     eliminated from our breeding program. No atypical     resistances/susceptibilities have been noted under normal cultural     practices.

The present new variety of peach tree, its flowers, foliage and fruit herein described may vary in slight detail due to climate, soil conditions and cultural practices under which the variety may be grown. The present description is that of the variety grown under the ecological conditions prevailing near Modesto, Calif. 

The invention claimed is:
 1. A new and distinct variety of peach tree (Prunus persica), substantially as illustrated and described. 